Seminarium Teorii Względności i Grawitacji

The improvement in the astronomical data quality has pushed for a better modelling and prediction of cosmological observables. In this scenario, numerical simulations have covered a crucial role to test models and compare theoretical predictions with observations. During my talk, I will present a new numerical tool to study light propagation in cosmological simulations called BiGONLIght. The mathematical machinery is based on the covariant formulation of the geometric optics using the bilocal geodesic operators (BGO) recently proposed in [PRD, 99(6), 064038]. The analysis of the optical properties of complicated spacetimes using the BGO formalism constitutes an efficient approach to probe the dynamics of the inhomogeneities on the large scale.Zoom meeting ID: 814 7211 6408 Passcode: 795365